Fractionated soybean protein material, processed soybean suitable for the material , and processes for production of the soybean protein material and the processed soybean

Active Publication Date: 2009-09-17
FUJI OIL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0053]According to a simple method of the present invention suitable for an effective production process, it is possible to fractionate a soybean protein into three fractions of 7S globulin, 11S globulin and a lipophilic protein with a high purity. Since said fractionation method is a method mainly comprising adjustment of pH without addition of a salt unlike a conventional fractionation method comprising addition of a salt, it does not need a dilution step and a desalting step for realizing a low ion concentration environment necessary for recovering a protein as a precipitate. Therefore, said fractionation method is an excellent method in which an operation for fractionation is simplified.
[0054]Further, it is possible to provide soybean milk and an isolated soybean protein having an excellent flavor and

Problems solved by technology

For this reason, there is a problem that only a simple fractionation based on dissolution behavior of both globulins for a pH can not obtain their fractions with a high purity.
Therefore, said method is effective at the experiment

Method used

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  • Fractionated soybean protein material, processed soybean suitable for the material , and processes for production of the soybean protein material and the processed soybean
  • Fractionated soybean protein material, processed soybean suitable for the material , and processes for production of the soybean protein material and the processed soybean
  • Fractionated soybean protein material, processed soybean suitable for the material , and processes for production of the soybean protein material and the processed soybean

Examples

Experimental program
Comparison scheme
Effect test

example 1

Ethanol Treatment 1

[0182]In a sealed container, 100 g of aqueous ethanol (10%, 50%, 60%, 70%, or 80%) was sprayed on 1 kg of a low-denatured defatted soybean (PDI: 83, water content: 7.0%) while mixing. The outside of the sealed container was heated so that the defatted soybean became a product temperature of 70° C., and then was maintained for 30 minutes. The defatted soybean was taken out of the container, and allowed to cool to obtain a processed defatted soybean. The processed defatted soybeans thus obtained had PDI of 71, 67, 64, 65 and 64, respectively.

example 2

Ethanol Treatment 2

[0183]A processed defatted soybean was prepared in the same manner as in Example 1 except that the amount of aqueous ethanol (70%) sprayed was increased to 150 g. The processed defatted soybean had PDI of 72.

example 3

Ethanol Treatment 3

[0184]A processed defatted soybean was prepared in the same manner as in Example 1 except that the amount of aqueous ethanol (70%) sprayed was increased to 200 g. The processed defatted soybean had PDI of 45.

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Abstract

Disclosed is a process for fractionating soybean protein into 7S globulin, 11S globulin or a lipophilic protein at a high purity with good efficiency, which relates to a fractionation technique for soybean protein into proteins having characteristic properties (7S globulin, 11S globulin and a lipophilic protein) and which is a process practicable at a food industrial level. It is found that soybean protein can be fractionated into 7S globulin, 11S globulin or a lipophilic protein at a high purity with good efficiency by extracting soybean milk from processed soybean which has been subjected to a water-insolubilization treatment specific to a desired protein and fractionating the resulting soybean milk or soybean curd refuse into the desired protein.

Description

TECHNICAL FIELD[0001]The present invention relates to a fractionated soybean protein material, a processed soybean suitable for the material, and processes for production of the soybean protein material and the processed soybean. More particularly, the present invention relates to a fractionation technique for a soybean protein into proteins having characteristic properties (7S globulin, 11S globulin and a lipophilic protein).BACKGROUND ART[0002]Soybean protein has been widely utilized for improving physical properties of foods because of its peculiar gelling property, and at the same time, use of soybean protein as a highly nutritious health food material has been increased.[0003]A storage protein of a soybean is precipitated at around pH 4.5, and therefore soybean protein can be relatively simply separated into an acid-soluble protein fraction mainly containing soluble components other than a storage protein and an acid-precipitable protein fraction mainly containing a storage pro...

Claims

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Application Information

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IPC IPC(8): A23C11/10A23L1/20A23C20/02A23L11/00
CPCA23C11/103A23J1/14A23J3/16A23L1/2005A23V2002/00A23V2200/326A23V2200/3262A23V2250/5488A23L11/05A61P3/06A23L11/65
Inventor SAMOTO, MASAHIKOMAEBUCHI, MOTOHIROMIYAZAKI, CHIAKIKUGITANI, HIROFUMIKOHNO, MITSUTAKAFUKUI, KENSUKEHIROTSUKA, MOTOHIKO
Owner FUJI OIL CO LTD
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